Extension bracket



Sept. 2 1924. 1,507,094

J. SCHOENBORN EXTENSION BRACKET Filed April 12, 1922 IN VE/V 70 J67? Zr/menorn a6, a haw" support.

Patented Sept. 2, 1924.

UNITED' ;STATES JOHN SQHOENBORIN', or crrrcaeo, ILLINOIS.

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Application filezi April 12,1922 Serial no. 551,978.

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Be it known that. I, JOHN g a citizen of the United States, and resident of Chicago, in the county of Cook and State of Illinois, have invented new and useful Improvements in Extension Brackets, of which the following is a specification.

This invention has, relation to supporting devices andre'fers more -I'JarticuIarly to ex.-

clusive means for supporting lamps, telephones, store fixtures and the like.

The object of my invention is the provision of an improved extension bracket of the so-called lazy-tongs type. A further object is to provide simple and easily operated means for attaching such articles to the To this end my invention consists in the combinations hereinafter fully described and illustrated in the appended drawing of which:

Fig. 1 is a side elevation of a structure embodying the invention.

Fig. 2 is a sectional plan-view through part of the structure,

Fig. 3 is a sectional front elevation of the parts shown in Fig. 2,

Fig. 4 is a side elevation of one of parts.

In the drawing is shown the corner of a table 1, to the overhanging top of which is clamped a pedestal Qsupporting a post 3, and to this post is anchored the lazy tongs arrangement 1, which in turn supports asecond post 5, from which a telephone set is shown held suspended. The device v as a whole bears sufiicient resemblance to such structures of this type as already found on the market, to make an explanation of its said ' operation unnecessary.

There are certain important features about the lazy tongs device which will now be pointed out. The post 3 is a cylindrical tube and it is shown partly in section in order to disclose a slot 3 which extends downward from the top of the post. Through this slot projects an arm 6 of a plunger 6, which arm pivotally supports the first link 4 of the lazy tongs. The second link P is pivotally hung from a stationary arm 7. The slot 3 is of sufiicient length to permit the plunger 6 to travel the length required for the operation of the lazy tongs. A cap 8 is fitted into the top of the post, partly in order to improve the appearance SoHoENBoRN,

thereof, and also because of thedangerously pointedend of the post Wl1lGl1 \V011lCl otherwise be left exposed.

The second post 5 is similarly slotted to i receive an-arm 9" of a plunger 9, and the last twolinks of the lazy tongs are in the same manner supported on this arm and on a stationary arm 10; The top and bottom ends of the post are closed by suitable caps 11, 12. v

Directly above the cap 12 it is noticed that the post is somewhat reduced in diameter, and that this reduced portion forms a bearing for a clamping member 13, which extends from the post to the telephone stem 14. This clamping member comprises two Now it is noticed that the key 17 extends half portions 15, 16, see also Fig. 2, which,

upward a considerable amount, and that av f cap 18 of the telephone stand is directly in the path of the top of this key. When the clamping member is put into position around the telephone stem, it is found that the latter sinks in the clamp until the cap 18 strikes the end of the key, thereby look ing the latter in position.

I claim I 1. In a telescoping extension'b'racket, a pair of posts, a lazy tongs bracket opera-' tively combining said posts, a work supporting clamp attachable to oneof said osts and to the work to be supported, said 0 amp made in two separable parts, and a detach-.-

able key combining said two parts, said key held in. position by the weight of the work supported.

2. In a support, the combination witha table bracket, of a lazy tongs arrangement extending from said bracket, and a clamp ing device attachable to the end of said arrangement, said device made in two half portions, and an independent key bar attachable to combine said half portions, said bar maintained in position by the article supported by said clamping device.

3. In a support column mountable on a desk, a second column, a lazy tongs device operatively combining said columns, a two part clamping member attachable to said second column and to an article to be supported, and a key locking said two parts toqether to hold said member in position, said Key held in place on the clamp by the article supported.

4. In a lazy-tongs support, in combination, a pair of tubular posts having each a slot extending downward from the top and facing each other, plungers slidable in said tubes and having arms projecting through said slots for connection with the lazy tongs of the support, and clamping means engaging one of said posts and the article sup ported, said means comprising a pair of members one of which is provided With hooks projectable through perforations in the other, and a key-bar engaging said hooks to clamp said members together, said bar held in place by the article supported.

5. The combination With a table bracket, of a lazy tongs arrangement. extending from said bracket and terminating in a cylindrical column, a pair of clamping members combining to form a-numeral 8, one eye of which encompasses said column and the other engaging the article supported, one member having hooks between the eye portions, which hooks extend through perforations of the other member, and a key engag Jenn scnonusonn- 

